1222124212221 has 24 divisors (see below), whose sum is σ = 1885370696160. Its totient is φ = 701698108320.

The previous prime is 1222124212219. The next prime is 1222124212247.

1222124212221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1222124212221 - 2¹ = 1222124212219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222124212191 and 1222124212200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222124212271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88591350 + ... + 88605143.

It is an arithmetic number, because the mean of its divisors is an integer number (78557112340).

Almost surely, 2^{1222124212221} is an apocalyptic number.

1222124212221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222124212221 is a deficient number, since it is larger than the sum of its proper divisors (663246483939).

1222124212221 is a wasteful number, since it uses less digits than its factorization.

1222124212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177196537 (or 177196526 counting only the distinct ones).

The product of its digits is 1024, while the sum is 24.

The spelling of 1222124212221 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-four million, two hundred twelve thousand, two hundred twenty-one".